ASTROSAT CZTI

Data Quality Report

Orbit 18227

Creation date: 2024-06-27T17:47:03.411557
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1C04_001T01_9000002716_18227cztM0_level2.evt modeM0/AS1C04_001T01_9000002716_18227cztM0_level2_quad_clean.evt
Size (bytes)557,608,320129,893,760
Size531.8 MB 123.9 MB
Events in quadrant A4,519,155844,543
Events in quadrant B3,416,271904,213
Events in quadrant C3,241,427856,382
Events in quadrant D5,225,750831,504

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01440
B01440
C01440
D01440

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A030
B030
C030
D030

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0182661
B0149192
C0145101
D0203601

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A71416999.788545%
B71411361.904495%
C71411472.058535%
D71414045.657471%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7441 7142 386 386 5.19% 5.40%
B 7441 7142 10 10 0.13% 0.14%
C 7441 7142 0 0 0.00% 0.00%
D 7441 7142 179 179 2.41% 2.51%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 174 1462739 9053.71 793 774 161.5
A 0 226 6840 37.57 793 774 161.5
A 12 194 5847 31.42 793 774 161.5
B 4 171 45515 280.77 835 814 159.2
B 7 220 41947 258.36 835 814 159.2
B 0 189 22099 133.69 835 814 159.2
C 14 238 125218 675.49 794 797 184.2
C 3 233 16358 84.48 794 797 184.2
C 13 61 5705 26.65 794 797 184.2
D 1 52 791327 4065.58 801 774 194.5
D 5 222 625413 3212.34 801 774 194.5
D 7 38 288313 1478.73 801 774 194.5

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter